org.reactfx.collection.ListModificationSequence Maven / Gradle / Ivy

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package org.reactfx.collection;

import java.util.Iterator;
import java.util.List;

import org.reactfx.util.Lists;

/**
 * Common supertype for {@link QuasiListChange} and {@link ListChangeAccumulator}.
 *
 * @param  type of list elements
 */
public interface ListModificationSequence
extends AbstractListModificationSequence> {

    /**
     * May be destructive for this object. Therefore, this object should not
     * be used after the call to this method, unless stated otherwise by the
     * implementing class/interface.
     */
    QuasiListChange asListChange();

    /**
     * May be destructive for this object. Therefore, this object should not
     * be used after the call to this method, unless stated otherwise by the
     * implementing class/interface.
     */
    ListChangeAccumulator asListChangeAccumulator();
}

interface AbstractListModificationSequence>
extends Iterable {

    List getModifications();

    @Override
    default Iterator iterator() {
        return Lists.readOnlyIterator(getModifications());
    }

    default int getModificationCount() {
        return getModifications().size();
    }
}